Interfacial stability of binary liquid—liquid systems—II. Stability behaviour of selected systems

Concentration and temperature profiles were obtained for mass transfer in partially miscible binary systems under transient conditions by simultaneous solution of the diffusion and energy equations incorporating thermal effects due to heat of solution. The resulting profiles were linearised and previously established stability criterial were used for stability analysis of six partially miscible liquid pairs covering a wide range of physical properties. In general, good agreement was obtained with experimental observations. The characteristic equation was solved for four cases fo convective instability to give a relation between growth constant and wave number.